Biology 2

It's the process by which a cell changes to become specialised for its job.

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Give one example of a condition that could be treated with embryonic stem cells.

Paralysis.

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What combination of X and Y chromosomes does: a) a male have? b) a female have?

a) XY b) **

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What are stem cells?

They are undifferentiated cells that can develop into different types of/specialised cells.

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Describe how stem cells could be used to treat disorders.

They could be grown into a particular type of cell, which can then be used to replace faulty cells.

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Explain why embryonic stem cells have the potential to treat more disorders than adult stem cells.

Embryonic stem cells have the potential to develop into any kind of cell, whereas adult stem cells can only develop into certain types of cell/embryonic stem cells are more versatile than adult stem cells.

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Give one place where adult stem cells are found in the body.

Bone marrow.

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Karen and Frank have four children. They are all girls. Karen discovers that she is pregnant. What is the probability that the new baby will be a boy? Explain your answer.

50%. The hanes of the child being a boy are the same 50% at each pregnancy.